Tube cross-reference
2DS4 alternatives, equivalents, and replacements
Review exact electrical variations and directional substitutions recorded for the 2DS4 nuvistor tubes (all numbers). Compare core specifications and verify every restriction before using a replacement.
Exact variations of 2DS4
These designations belong to the same electrical variation group. Their names may differ because of international standards, manufacturing tolerances, or materials, but they are recorded as electrically equivalent—not merely substitutes.
2CW4 Nuvistor Tubes (all numbers)
- Base
- 12AQ
- Socket
- NUVISTOR5
- Base pins
- 5
- Sections
- 1
- Heater voltage
- 2.1 V
- Heater current
- 0.45 A
Replacement tubes for 2DS4
The following tubes are recorded as possible replacements for 2DS4. This direction does not establish that 2DS4 can replace them.
Nuvistor Tubes (all numbers)
The database records 2CW4 as a possible replacement for2DS4.
No special restrictions are recorded for this substitution.
| Specification | Original tube | Replacement |
|---|---|---|
| Tube type | Nuvistor Tubes (all numbers) | Nuvistor Tubes (all numbers) |
| Construction | Triode | Triode |
| Base | 12AQ | 12AQ |
| Socket | NUVISTOR5 | NUVISTOR5 |
| Base pins | 5 | 5 |
| Sections | 1 | 1 |
| Heater voltage | 2.1 V | 2.1 V |
| Heater current | 0.45 A | 0.45 A |
Where 2DS4 can be used as the replacement
In these recorded relationships, 2DS4 is the replacement tube. The listed original tubes are not automatically suitable as replacements for 2DS4.
Nuvistor Tubes (all numbers)
The database records 2DS4 as a possible replacement for2CW4.
No special restrictions are recorded for this substitution.
| Specification | 2DS4 replacement | Original tube |
|---|---|---|
| Tube type | Nuvistor Tubes (all numbers) | Nuvistor Tubes (all numbers) |
| Construction | Triode | Triode |
| Base | 12AQ | 12AQ |
| Socket | NUVISTOR5 | NUVISTOR5 |
| Base pins | 5 | 5 |
| Sections | 1 | 1 |
| Heater voltage | 2.1 V | 2.1 V |
| Heater current | 0.45 A | 0.45 A |
Verify before substituting
Matching a base or heater voltage is not enough to prove that two tubes are interchangeable. Check pin connections, heater current, maximum ratings, bias requirements, warm-up behavior, and the equipment manufacturer’s service documentation before making a substitution.
View the complete 2DS4 specifications →